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/*!
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Copyright(c) 2009 Apogee Instruments, Inc.
* \class CLibCurlWrap
* \brief C++ wrapper for the libcurl c interface
*
*/
#include "libCurlWrap.h"
#include <stdexcept>
#include "apgHelper.h"
////////////////////////////
// Write any errors in here
static char errorBuffer[CURL_ERROR_SIZE];
////////////////////////////
// VECT WRITER
static std::vector<uint8_t> bufferVect;
static int32_t vectWriter(uint8_t *data, size_t size, size_t nmemb,
std::vector<uint8_t> &bufferVect)
{
const int32_t numBytes = apgHelper::SizeT2Int32(size) * apgHelper::SizeT2Int32(nmemb);
bufferVect.insert( bufferVect.end(), &data[0], &data[numBytes] );
return numBytes;
}
////////////////////////////
// STR WRITER
// This is the writer call back function used by curl
static std::string bufferStr;
static int32_t strWriter(char *data, size_t size, size_t nmemb,
std::string &bufferStr)
{
const size_t numBytes = size * nmemb;
bufferStr.append( data, numBytes );
return apgHelper::SizeT2Int32( numBytes );
}
////////////////////////////
// LOCAL NAMESPACE
namespace
{
const long OPERATION_TIMEOUT = (60*1); //60 seconds * the number of minutes
}
////////////////////////////
// CTOR
CLibCurlWrap::CLibCurlWrap() : m_curlHandle( 0 ),
m_fileName( __BASE_FILE__ )
{
m_curlHandle = curl_easy_init();
m_timeout = OPERATION_TIMEOUT;
if( !m_curlHandle )
{
std::string errStr("curl_easy_init failed");
apgHelper::throwRuntimeException( m_fileName,
errStr, __LINE__, Apg::ErrorType_Connection );
}
}
////////////////////////////
// DTOR
CLibCurlWrap::~CLibCurlWrap()
{
curl_easy_cleanup( m_curlHandle );
}
////////////////////////////
// HTTP GET
void CLibCurlWrap::HttpGet(const std::string & url,
std::string & result)
{
CurlSetupStrWrite ( url );
result = ExecuteStr();
}
////////////////////////////
// HTTP GET
void CLibCurlWrap::HttpGet(const std::string & url,
std::vector<uint8_t> & result)
{
CurlSetupVectWrite ( url, result );
ExecuteVect( result );
}
////////////////////////////
// HTTP POST
void CLibCurlWrap::HttpPost(const std::string & url,
const std::string & postFields,
std::string & result)
{
CurlSetupStrWrite ( url );
curl_easy_setopt(m_curlHandle, CURLOPT_POSTFIELDS, postFields.c_str());
result = ExecuteStr();
}
////////////////////////////
// HTTP POST
void CLibCurlWrap::HttpPost(const std::string & url,
const std::string & postFields,
std::vector<uint8_t> & result)
{
CurlSetupVectWrite ( url, result );
curl_easy_setopt(m_curlHandle, CURLOPT_POSTFIELDS, postFields.c_str());
ExecuteVect( result );
}
////////////////////////////
// CURL SETUP STR WRITE
void CLibCurlWrap::CurlSetupStrWrite(const std::string & url)
{
// Now set up all of the curl options
curl_easy_setopt(m_curlHandle, CURLOPT_ERRORBUFFER, errorBuffer);
curl_easy_setopt(m_curlHandle, CURLOPT_URL, url.c_str());
curl_easy_setopt(m_curlHandle, CURLOPT_WRITEFUNCTION, strWriter);
curl_easy_setopt(m_curlHandle, CURLOPT_WRITEDATA, &bufferStr);
curl_easy_setopt(m_curlHandle, CURLOPT_TIMEOUT, m_timeout);
}
////////////////////////////
// CURL SETUP VECTOR WRITE
void CLibCurlWrap::CurlSetupVectWrite(const std::string & url, const std::vector<uint8_t> & result)
{
// Now set up all of the curl options
curl_easy_setopt(m_curlHandle, CURLOPT_ERRORBUFFER, errorBuffer);
curl_easy_setopt(m_curlHandle, CURLOPT_URL, url.c_str());
curl_easy_setopt(m_curlHandle, CURLOPT_WRITEFUNCTION, vectWriter);
curl_easy_setopt(m_curlHandle, CURLOPT_WRITEDATA, &result);
curl_easy_setopt(m_curlHandle, CURLOPT_TIMEOUT, m_timeout);
}
////////////////////////////
// EXECUTE STR
std::string CLibCurlWrap::ExecuteStr()
{
//clear out the string
bufferStr.clear();
//perform the transfer
const CURLcode result = curl_easy_perform(m_curlHandle);
if( CURLE_OK != result )
{
std::string curlError( errorBuffer );
apgHelper::throwRuntimeException( m_fileName, curlError,
__LINE__, Apg::ErrorType_Critical );
}
return bufferStr;
}
////////////////////////////
// EXECUTE VECT
void CLibCurlWrap::ExecuteVect( std::vector<uint8_t> & result )
{
//clear out the vector
result.resize(0);
//perform the transfer
const CURLcode returnCode = curl_easy_perform(m_curlHandle);
if( CURLE_OK != returnCode )
{
std::string curlError( errorBuffer );
apgHelper::throwRuntimeException( m_fileName, curlError,
__LINE__, Apg::ErrorType_Critical );
}
}
////////////////////////////
// SET TIMEOUT
void CLibCurlWrap::setTimeout( int timeout )
{
if (timeout < 0)
{
m_timeout = OPERATION_TIMEOUT;
}
else
{
m_timeout = timeout;
}
}
////////////////////////////
// GET TIMEOUT
unsigned int CLibCurlWrap::getTimeout()
{
return m_timeout;
}
////////////////////////////
// GET DRIVER VERSION
std::string CLibCurlWrap::GetVerison()
{
std::string version( curl_version() );
return version;
}
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